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AD9648 View Datasheet(PDF) - Analog Devices

Part NameDescriptionManufacturer
AD9648 14-Bit, 125 MSPS/105 MSPS, 1.8 V Dual Analog-to-Digital Converter ADI
Analog Devices ADI
AD9648 Datasheet PDF : 44 Pages
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AD9648
MEMORY MAP REGISTER TABLE
All address and bit locations that are not included in Table 18 are not currently supported for this device.
Table 18. Memory Map Registers
Addr
(Hex)
Register
Name
Bit 7
(MSB)
Chip Configuration Registers
0x00
SPI port
config
(global)
Open
Bit 6
LSB first
Bit 5
Bit 4
Soft reset 1
Bit 3
1
0x01
Chip ID
(global)
0x02
Chip
grade
(global)
Open
Speed grade ID
100 = 105 MSPS
101 = 125 MSPS
8-bit chip ID[7:0]
AD9648 = 0x88
Channel Index and Transfer Registers
0x05
Device
index
(global)
Open
Open
Open
Open
Open
0xFF
Transfer
Open
Open
(global)
Open
Open
Open
ADC Functions
0x08
Power
modes
(local)
Open
Open
0x09
Global
clock
(global)
Open
Open
External
power-
down pin
function
0 = PDWN
1 = standby
Open
Open
Open
Open
Open
Bit 2
Bit 1
Bit 0
(LSB)
Default
Value
(Hex)
Comments
Soft reset LSB first
Open
Open
0x18
Read
only
Read
only
The nibbles
are
mirrored so
LSB-first
mode or
MSB-first
mode
registers
correctly,
regardless
of shift
mode
Unique chip
ID used to
differentiate
devices;
read only
Unique
speed
grade ID
used to
differentiate
devices;
read only
Open
Open
Data
Data
0x03
Channel B Channel A
Open
Transfer
0x00
Bits are set
to
determine
which
device on
the chip
receives the
next write
command;
applies to
local
registers
only
Synchron-
ously
transfers
data from
the master
shift
register to
the slave
Open
Open
Internal power-down
mode
00 = normal operation
01 = full power-down
10 = standby
11 = digital reset
Open
Duty cycle
stabilizer
0=
Disabled
1=
enabled
0x00
0x01
Determines
various
generic
modes of
chip
operation
Rev. 0 | Page 36 of 44
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